Imrecoxib Impurity 57 CAS CATO-C4X-237957

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-237957
Molecular FormulaC22H22O3S
Molecular Weight366.47 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Imrecoxib Impurity 57 CAS CATO-C4X-237957 chemical structure

Description

Based on its molecular formula C22H22O3S, Imrecoxib Impurity 57 contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 366.47 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Imrecoxib Impurity 57 (CAS CATO-C4X-237957) is a certified pharmaceutical impurity reference standard with the molecular formula C22H22O3S and a molecular weight of 366.47 g/mol.

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC22H22O3S
Molecular Weight366.47 g/mol
Purity≥95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Sulfur Atoms1

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